Bubbles

Resting Throat. Bubbles can only recharge one action at the start of his turn.

Magical Hiccups. Once Bubbles uses a rechargeable attack, he may not use a different one unless he uses a bonus action to clear his throat. 

Multiattack. Bubbles makes two claw attacks.

Claw. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage.

Flame Beam (Recharge 3-6). Bubbles shoots a beam of fire from its mouth forming a line 100 feet long and 5 feet wide in a direction he chooses. Each creature in the line must make a DC 18 Dexterity saving throw, each creature taking 55 (10d10) fire damage on a failed save, or half as much damage on a successful one.  The fire ignites flammable objects in the area that aren't being worn or carried.

Frozen Vapor (Recharge 3-6). Bubbles exhales an icy blast in a 30-foot cone. Each creature in that area must make a DC 18 Dexterity saving throw, taking 45 (10d8) cold damage on a failed save, or half as much damage on a successful one.  The area affected by the blast is considered difficult terrain until the start of Bubbles next turn.

Noxious Spume (Recharge 3-6). Bubbles creates 20-foot-radius sphere of poisonous foam centered on a point that he can see within 50 feet of him for one minute.  It spreads around corners and the area is heavily obscured.  Each creature that enters the foam's area for the first time on a turn or starts its turn there must make a DC 18 Constitution saving throw, taking 28 (8d6) poison damage on a failed save, or half as much damage on a successful one. On a failed save, it is also poisoned until the end of Bubbles next turn. Creatures are affected even if they hold their breath or don't need to breathe.

Healing Huggle (3/Day). Bubbles hugs another creature with his wings. The target magically regains 26 (6d6 + 5) hit points and is freed from any curse, disease, poison, blindness, or deafness.

Bubbles can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. Bubbles regains spent legendary actions at the start of his turn.

Fly. Bubbles beats his wings and can fly up to 50 feet.

Claw Swipe. Bubbles makes the claw attack action.

Three Octave Range (Cost 2 Actions). Bubbles chooses one of the following actions and performs it: Flame Beam, Frozen Vapor, Noxious Spume.